Dozer tracks

pinball · Jun 18, 2015

I am working on a 310 case crawler. I have the tracks off the right side. Not to much wear on pins. My question is if I reverse the track when putting it on isn't that the same as rolling the pins 50 percent. I am going to replace the grousers with street pads anyway so turning the pads around is not a problem. Am I not thinking about some thing I should be. need some advise. thanks norm

NCWayne · Jun 18, 2015

Short answer, No.

Turning the pins and bushings means putting the top at the bottom, and the bottom at the top. In other words turning them around 180 degrees on their axis, not changing the direction they run on the machine. They wear on the bottom where they travel across the sprocket, and turning them puts a fresh area at the bottom. Now days, in most cases, it's not even worth turning the pins and bushings anymore on anything but a larger machine.

That said, put your track assemblies back on the same way they came off. There is a forward and reverse direction on the tracks. Yes they will technically work either way, but they are only right when put on one way.

JonathaninMa · Jun 18, 2015

The pins and bushings generally wear where the chains flex over and are engaged by the sprocket and also around the front idler. If you look at the contact area where the sprocket contacts the bushing, it is for the most part on the inner 1/2 of the bushing--as viewed from the side--- the inner side away from the track pad. The inner pin also wears in the same general area -- the diameter of the pin wears as well as the inner surface of the bushing---hence the "stretched" track chain. When the pins and bushings are "turned" , these pins and bushings are turned 180 degrees to expose the non worn area of the external surface of the bushing to the sprocket teeth as well as the pins will wear on a different area of the bushing internally. This allows more total wear of these components to occur before they are scrap. Just turning the tracks around will still allow the sprockets to engage the same contact surface of the bushings --- maybe a few degrees differently, but I wouldn't think much differently.

pinball · Jun 19, 2015

Thanks. Sounds like I just need to put them back on the same way. This is just my summer project. It probably wont get a lot of use. I have the right side tracks and rails completely apart. had one support bracket busted and one bad roller but my parts crawler fixed that. now have to clean/paint them to start putting it back together. thanks for the input. norm in missouri

Dr. Walt · Jun 24, 2015

NCWayne:

"There is a forward and reverse direction on the tracks. Yes they will technically work either way, but they are only right when put on one way."

I assume this applies to ALL crawlers so: What is the "right" or correct way the track plates should be mounted, with the grouser on the leading side of the plate or on the trailing side of the plate?

I have seen them mounted both ways, so what is correct?

THANKS!

Doc :>)

Ian Beale · Jun 24, 2015

Dr Walt

I've just had to consult our FA 10 manual on something else and checked - it shows the grouser bar at the front

Dr. Walt · Jun 25, 2015

Ian Beale:

Thanks Ian .

Doc :>)

AJ. · Jun 25, 2015

The correct orientation for the tracks is the female link comes over the top of sprocket towards the idler first,the grouser on dozer pads goes to the front as does the tongue on street pads,putting the tracks on backways is not the same as turning the pins and bushes which I don't think is viable on small dozers,I have come across a lot of machines with the tracks on backways and the people running them did not notice but it is said that when on backways the chain does not clean it self as well and that can cause extra ware,below is a link to a site that explains about undercarriage,the file can be downloaded,it is IH based but suites most crawlers.
AJ
http://www.external_link.com/PDFs/undrcarguide.pdf

Dozer tracks

pinball

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NCWayne

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JonathaninMa

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pinball

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Dr. Walt

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Ian Beale

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Dr. Walt

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AJ.

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